Problem: The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.310 M NaOH.What volume of NaOH is needed to reach the end point of the titration? What was the initial concentration of HCI?

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In this problem, we are asked to determine the (a) volume of NaOH is needed to reach the endpoint of the titration and the (b) initial concentration of HCI.


Part A. From the image:

Lower meniscus in the buret → 25.0 mL

Thus, the volume of NaOH used is 25.0 mL NaOH.

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Problem Details

The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.310 M NaOH.

What volume of NaOH is needed to reach the end point of the titration? 

What was the initial concentration of HCI?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Strong Acid Strong Base Titrations concept. You can view video lessons to learn Strong Acid Strong Base Titrations. Or if you need more Strong Acid Strong Base Titrations practice, you can also practice Strong Acid Strong Base Titrations practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hazari's class at YU.